<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .haha{
            color: red;
        }
    </style>
</head>
<body>
    <div id="app">
        <span v-bind:style=" {color: activeColor, fontSize: fontSize + 'px'}">
            {{天边}}
        </span>
    </div>
    <script src="https://cdn.jsdelivr.net/npm/vue@2.6.12"></script>
    <script>
        let app = new Vue({
            el: '#app',
            data(){
                return {
                    activeColor: 'yellow',
                    fontSize: 72,
                    天边: '展开翅膀'

                }
            }
        })
    </script>
    
</body>
</html>